Ingredients

• 2½ cups macaroni (cooked)
• 4 tbsp butter
• 4 tbsp flour
• 1-1½ lbs of cheese (shredded)
• 2 cups warm milk

Instructions

1. Preheat oven to 375°F.
2. Melt butter in a skillet, add flour.
3. Stir together, cooking about 1 minute.
4. Add milk.
5. Cook together until thick (10-15 min).
6. Make sure the roux and milk are mixed together well.
7. Add ¾ of the cheese to the roux.
8. Melt.
9. Put cooked macaroni in a casserole dish.
10. Pour the roux and cheese into the macaroni.
11. Mix well.
12. Put rest of cheese on top.
13. Cook in the oven for 20 min.

Source : la grand-mère d'un utilisateur de Imgur